Agwamarina

An agwamarina iyo an malungsing asul sagkod sa mapusyaw na berde na baryedad kan beryl.^[1] An kolor kan agwamarina pwede liwaton sa paagi kan init (minsan ngani an praktis na ini habo kan mga kolektor).^[2]

1. ↑ Manutchehr-Danai, Mohsen (2013-03-09). Dictionary of Gems and Gemology (in English). Springer Science+Business Media. p. 24. ISBN 978-3-662-04288-5. 
2. ↑ Wenk, Hans-Rudolf; Bulakh, Andrei (April 2004). Minerals: Their Constitution and Origin (in English). Cambridge University Press. p. 542. ISBN 978-0-521-52958-7.